/Engine/Source/Developer/AnimationDataController/Public/AnimDataController.h
Remove a single key from the curve with provided identifier and name. Broadcasts a EAnimDataModelNotifyType::CurveChanged notify if successful.
Whether or not the curve key was successfully removed
virtual bool RemoveCurveKey ( const [FAnimationCurveIdentifier](API\Runtime\Engine\Animation\AnimData\FAnimationCurveIdentifier) & CurveId, float Time, bool bShouldTransact )